Recent Earthquakes in California and Nevada
== PRELIMINARY EVENT REPORT ==
Southern California Seismic Network: a cooperative project of
U.S. Geological Survey, Pasadena California
Caltech Seismological Laboratory, Pasadena, California
Version #5: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro quarry occurred at 1:31:03 PM (PDT) on Thursday, September 11, 2025.
The magnitude 1.6 event (a probable quarry explosion) occurred 9 km (6 miles) SE of Porterville, CA.
The hypocentral depth is -1 km (-0.50 miles).
| Magnitude | 1.6 - local magnitude (Ml) |
| Time | Thursday, September 11, 2025 at 1:31:03 PM (PDT) Thursday, September 11, 2025 at 20:31:03 (UTC) |
| Distance from |
Porterville, CA - 9 km (6 miles) SE (144 degrees) Poplar-Cotton Center, CA - 19 km (12 miles) ESE (111 degrees) Woodville, CA - 24 km (15 miles) ESE (116 degrees) Lindsay, CA - 26 km (16 miles) SSE (153 degrees) Pixley, CA - 30 km (19 miles) E (84 degrees) |
| Coordinates | 35 deg. 59.9 min. N (35.998N), 118 deg. 57.4 min. W (118.956W) |
| Depth | -0.87 km (-0.50 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=19, Nph=33, Dmin=12.5 km, Rmss=0.24 sec, Erho=0.57 km, Erzz=31.61 km, Gp=177 degrees |
| Event ID# | ci41289360 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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